Air-blast gas burner



1 637 772 1927' c. F. HECKEL 1:1" AL AIR BLAST GAS BURNER I Filed March 22., 1925 s Sheets-Sheet 1.

/NVE/VT@I8 CHARLES F.HECKEL EDWARD MESSER JTTQE/VEY 1 637,772 A 1927' c. F. HECKEL ET AL' AIR BLAST GAS BURNER Filed March 22. 1923 3 Sheets-Sheet 2 nvVeNraks CHARLES F. HEQKEL Blow man MESSEP- ITT'OE/VEY Au v 1637 772 g 1927 c. F. HECKEL ET AL AIR BLAST GAS BURNER I Filed Marchzz, 192:5- '3 Sheets-Shut 3 INVENTORS CHARLES E. HEcKEL En'wAlzo Masses: I

' ATTORNEY Fatented Aug. 2, 1927.

UNITED STATES ATENT OFFICE.

CHARLES F. HECKEL, OF NEWPORT, KENTUCKY, AND EDWARD HESSER, OF PITTS- BURGH, FENNSYLVANIA; SAID HEGKEL ASSIGNOR TO SAID MESSER.

AIR-BLAST GAS BURNER.

Application filed March 22, 1928. Serial 170.8263.

Our invention relates to burners for heating vessels mounted upon a furnace or for heating the furnace itself when it is used as a heater for heating residences or other buildings or for use in a boiler for heating air, water or making steam.

The objects of ourinvention are to provide a burner which will produce an intense heat with a minimum of gas mixed with air under varying degrees of pressure; to provide convenient regulating means whereby the volume of air may be regulated to correspond with the flow of gas under varying pressures; to provide means whereby the i5 size and shape of the burner may be conveniently varied, depending upon the size of furnace and the purpose for which it is used, and to otherwise simplify and improve the burners as herein set forth.

Our invention consists in a burner provided with a central gas chamber having a plurality of gas tubes leading therefrom, an air chamber with a plurality of air tubes leading therefrom and surrounding the re- 2 spective gas tubes and each having means for regulating the quantity of air, whereby the volume of air relative to the volume of gas will be regulated adjacent the respective gas jet orifices.

Our invention further consists in providing means whereby said burner is made extensible and interchangeable to adapt it to varying sizes of furnaces and to various specific uses for burning gas, oil and gasoline.

Our invention further consists in the peculiar construction, combination and arrangement of parts as herein set forth and claimed.

In the drawings:

Fig. 1 is a vertical section of the burner taken on the line l1 of Fig. 2;

Fig. 2 is a plan View of the preferred form or burner used for heating kettles;

Fig. 3 is a perspective view of the burner installed in a furnace with a motor air blower connected thereto;

. Fig. 4 is a view partly in elevation and partly in vertical section of a straight burner adapted to be installed in series for an elongated furnace or boiler;

Fig. 5 is a plan view showing a modified construction of round burner;

Fig. 6 is a vertical section on the line 66 of Fig. 5;

Fig. 7 is another modified construction of round burner for heating the walls of furnaces for hot water or steam boilers;

Fig. 8 is a vertical section on the. line 8-8 of Fig. 7;

Fig. 9 is a vertical section of one of the gas and air mixtures adjusted to permit a maximum of the air to mix with the gas when the gas pressure is highand Fig. 10 is a view thereof ad usted to permit a minimum supply of air when the gas pressure is low.

In the embodiment of our invention as illustrated and which shows preferred constructions we provide a cast housing 1 with 10 a central upper as chamber 2 and a lower air chamber 3. he gas chamber 1 is closed by plate 4 mounted on an asbestos gasket 5 p and secured in position by screws 6. Said chamber is provided with an inlet 7 in the bottom to which gas inlet tube 8 is suitably connected. The side wall of said gas chamber is provided with a plurality of radially disposed outlets 9 having gas outlet tubes 10 removably secured therein. The bottom of air chamber 3 is closed by plate 11 secured thereto by screws 12 and having a central opening 13 with an inwardly. extending flange 14. -and a downwardly -extending flange 15 adapted to receive air inlet pipe 16 surrounding gas inlet tube 8. The side wall of said air chamber is provided with a plurality of openings 17 each adapted to receive air outlet tube 18 each removably held in position by screw 19. The outer end of each air outlet tube 18 is internally screw threaded and is adapted to receive an adjustable plug 20 for regulating the quantity of air which passes outwardly through air outlet tube 18 around gas outlet tube 10 around which said plug. is mounted ad'acent its outer end. Said plug is provi ed with a tapering -or converging air passage t rough, an

21 and its to is provided with an angular boss 22' by w ich said plug may be ad]usted with a wrench. Said boss is preferably provided-with a central tapering depression 23 in order that the heig t of the plug may be correspondingly reduced in size. Said air and gas tubes may be curved upwardly, as shown in Figs l, 2, 3, 5 and 6 or may extend horizontally, as shown in Figs. 7 and 8 .or may extend upwardly, as shown in Fig. 4 depending upon the direction in which it is desired to direct the heat. The air chamber is connected to a motor air blower 24' by air inlet ipe 16. The gas inlet tube 8 enters air in et pipe 16 as shown in Fig. 3

and is disposed centrally thereim thereby permitting the air to pass around it.

The construction of the burner shown in Figs. 1 and 2 is particularly adapted for use in furnaces for heating cooking kettles,

as illustrated in Fig. 3 showing the burner mounted in open bottom furnace 25in which the cooking kettle is supported in spaced apart relation from the furnace wall by circular support 26 having an inner beveled or curved wall adapted to fit the outer wall of kettles of varying shapes and sizes. By thus rounding the outer end of gas outlet tube .10

which permits said plug to be adjusted outwardly-or inwardly toward or from the fet orifice 28 of the gas outlet tube 10 where y when the gas fpressure is high a corresponding amount 0 air to be mixedtherewith can be obtained by adjusting said plug outwardly over the outwardly tapering end of gas outlet tube 10 as shown in Fig. 9 therepermitting a larger discharge of air therewhen the gas pressure is less the lug ma be adjusted inwardly as shown In ig. 10 t ereby correspondingly reducing the size of the air outlet 18 "and consequently reduclng the volume of air which. may be discharged therethrough to mix with the gas.

Anot er important feature of the invention consists in provision for extending and increasing the'number of burners as illustrated in Figs. 5 and 6 to adapt it to varying sizesof furnaces; also in the provision w ereby the ,individual burners may be changed from those extending uprightly as in Figs. 1 and 2 to those extending horiobtained thereby giving upwardly while others may extend out wardly toward the walls of the furnace thereby providing a furnace which is adapted to heat kettles as well as to heat the radiating walls of the furnace at the same time.

In the modified construction illustrated in Fi s. 5 and 6 outlet tubes 18 are each provi ed with a T-coupling 29, in which an adjustable plug 20 is mounted and gas outlet tube 8 is provided with T-coupling 30 on which the outer end 8" of said gas outlet tube is mounted. 1

In the construction shown in Figs. 7 and 8 the adjustable plug is inserted in the end of a straight air outlet tube 18" and over the outer end of straight gas outlet tube 8"" whereby the heat is directed laterally from each individual burner against the furnace wall instead of upwardly.

In the modified construction illustrated in Fig. 4, outlet tubes 18" are each provided with a lurality of T-couplings 29"in which adjusta le plugs 20 are mounted and gas outlet tube 8" is provided with T-coupling 30' into which tubes 31 and Ts 30" are screwed. By this construction the burner can be extended or built out to considerable length if desired by addin T-couplin'gs 29' and gas outlet tubes 8"". en theburner is built up to the desired length the ends are closed by closure caps 32.

The tapered end of each gas outlet tube and the reverse tapering wall of the adjust able plug forms an inwardly convergin circular assage for the air outwardly t erethroug whereby it is caused to thoroughly penetrate and mix with the charged from the gas tube.

By providing a as chamber in close proximity the individual burners connected theretoby radiating gas outlet tubes an even and uniform and full volume of gas flow is oil of more inflammab to mixing a likewise pro-heated air.

While we' have illustrated preferred embodiments of our invention it will be understood that other modifications than those illustrated may be made without departure from the scope or spirit of'the invention as defined in the claims. w

What we claim as new and desire to secureby Letters Patent is:

1. In combination with contained therein, a as chamber with'means for admitting gas t ereto, an air chamber surrounding said as chamber and means for admitting air t ereto, a plurality of'gas gas being dispre-heated gas or I .nature preparatory a gas furnace and outlets leading and radiating from said gas chamber, a plurality of air outlets leadin from said air chamber and encircling said gas outlets, respectively, in spaced apart relation thereto, and adjustable means in-the outer end of said air outlets with means thereon by which the air flow and pressure may be regulated, substantially as set forth and for the purposes specified.

2. In combination with a gas furnace and contained therein, a gas chamber with means for admitting gas thereto and so located that the gas will be pre-heated before it reaches the gas burners, an air chamber surrounding said gas chamber and means for admitting air thereto andso located that the air therein will be pre-heated before it reaches the burners, a plurality of gas outlets leading and radiating from said gas chamber, a plurality of air outlets leadin from said air chamber and encircling sai gas outlets, respectively, and means in the outer-end of each air outlet with means thereon by which the air flow and pressure may be regulated, substantially as set forth and for the purposes specified.

3. In a multiple gas burner having a gas chamber and an air chamber surrounding said gas chamber, a plurality of interchangeable gas outlet tubes leading from said gas chamber, a plurality of interchangeable air outlet tubes leading from said air chamber and each spaced apart from and surrounding one of said gas outlet tubes, and means for regulating the volume of air discharged through said air tubes, respectively, substantially as set forth and for the purposes speclfied.

4. In a multiple gas burner having a gas chamber and an air chamber, a plurality of interchangeable gas outlet tubes leading from said gas chamber, a jet orifice connected to each of said gas outlet tubes, a plurality of interchangeable air outlet tubes leading from said air chamber and each having a plurality of air outlets and means for regulating the volume of air discharged through each air outlet around its gas jet orifice, substantially as set forth and for the purposes specified.

5. In a multiple gas burner having a gas chamber and an air chamber, a plurality of as outlet tubes leading from said gas chamr, a plurality of air outlet tubes leading from said air chamber and surrounding said gas outlet tubes, respectively, and each air outlet tube internally threaded adjacent to its outer end, an adjustable hollow externally threaded plug interposed between the outlet end of each gas outlet tube and the surrounding air outlet tube and having its inner wall converging toward the outer end, substantiall as set forth and forthe purposes speci ed.

6. In a gas burner, an air outlet tube, a gas outlet tube projecting through said air outlet tube, an adjustable externally threaded plugscrewed into the outer end of said air tube, said plug having an angular boss on its outer end whereby the flow of air from said air outlet tube may be regulated-and having a depression in the outer end of said plug whereby the height of said plug may be greatly reduced in size, substantially as set forth and for the purposes specified.

7. In a multiple gas burner having an air chamber and a plurality of air outlets with means'to supply air to said air chamber, a gas chamber with means to supply gas thereto, a gas outlet therefrom through each of said air outlets, and ad'ustable means for regulatin the volume 0 air from each air outlet, su tantially as set forth and for the purposes specified.

8. In a multiple gas burner, a gas chamber and means to supply gas thereto, a plurality of detachable sectional gas outlets, an air chamber, and means to supply air thereto, a detachable sectional air outlet surrounding each gas outlet and means for regulatin the volume of. air from each air outlet, substantially as set forth and for the purposes specified.

9. In a multi le gas burner, a gas chamber and means for supplying gas thereto, a plurality of detachable sectional gas outlets arranged in series and leading from said gas chamber, an air chamber and means for supplying air thereto, a plurality of detachable sectional air outlets arranged in series each gas outlet being surrounded by one 0 said air outlets and means for regulating the volume .of air from each air outlet, substantially as set forth and for the purposes specified.

10. In a multiple gas burner, a as chamber, a plurality of sectional interc angeable detachable gas outlets leading therefrom, an air chamber, and means for supplying air thereto, a plurality of sectional interchan e able detachable air outlets, each air out et surrounding a corresponding gas outlet whereby anyone of said cooperating gas and air sections may be interchanged according to the desired use for which t e burner may be used, as'herein illustrated, described and claimed.

11. In a multiple gas burner, a plurality of sectional gas tubes connected to a source of gas supply, a three-way coupling interposed between the adjacent sections of the gas tube, a gas tube for each burner leading upwardly from each of said couplings and a gas tube extending upwardly from the outer end of said gas tube for the outer burner, a sectional air tube and means to each air outlet and means for adjusting said plugs to increase or diminish the flow and Volume of air therethrough, substantially as set forth and for the purposes specified.

12. In a multiple gas burner, a cast housing, a plate mounted on the top thereof to form a gas chamber, ,a plate at the bottom of said casting adapted to form an air chamber partly surrounding said gas chamber, an air mlet to said air chamber, a gas inlet extending through said air inlet and air chamber to said gas chamber, a plurality of air outlets from said air chamber, a plurality of gas outlets from said as chamber through said air chamber an air outlets, and means for regulating the flow of air through said air outlets.

CHARLES F. HECKEL. EDWARD MESSER. 

